Now that she's getting on in years she wanted to pass them on to someone who would value them as much as she did. It looks like her father catalogued them by attaching them to the back of old advertising signs.
There's lots of colourful early plastics, Czech glass and MOP. There were also lots of loose buttons in old Sylko thread boxes, and some plastic fisheye buttons on rolls of double-sided tape, no doubt for ease of selling.
I'm enjoying reading all the button stories on this Blog. Maybe one day I'll get used to posting to Blogger (I find juggling the pics around a little difficult). If you want to check out another button blog you can check out mine at http://bowerbirdz.wordpress.com/